128200102400 has 60 divisors (see below), whose sum is σ = 317625801042. Its totient is φ = 51280035840.

The previous prime is 128200102399. The next prime is 128200102411. The reversal of 128200102400 is 4201002821.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 72572049664 + 55628052736 = 269392^2 + 235856^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4995017 + ... + 5020616.

Almost surely, 2^128200102400 is an apocalyptic number.

128200102400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128200102400 is an abundant number, since it is smaller than the sum of its proper divisors (189425698642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128200102400 is an equidigital number, since it uses as much as digits as its factorization.

128200102400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10015661 (or 10015640 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The spelling of 128200102400 in words is "one hundred twenty-eight billion, two hundred million, one hundred two thousand, four hundred".